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Date:      Tue, 21 Oct 1997 08:41:01 -0500 (CDT)
From:      Jim Bryant <jbryant@unix.tfs.net>
To:        jamil@trojanhorse.ml.org (Jamil J. Weatherbee)
Cc:        freebsd-hackers@freebsd.org
Subject:   Re: Solid State Disks
Message-ID:  <199710211341.IAA11750@argus.tfs.net>
In-Reply-To: <Pine.BSF.3.96.971020231150.258A-100000@trojanhorse.ml.org> from "Jamil J. Weatherbee" at "Oct 20, 97 11:23:43 pm"

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In reply:
> Anybody seen any good literature/prices on this sort of thing lately. How
> long are they rumored to exist.  It would be really cool if a PC was like
> an hp48, damn thing never crashes and is basically always on.

kinda cool...  SS disks have been around for a while, but i don't
recall non-volatility though.

> Memory can be maintained indefinitely without application of
> external power via eeprom mirroring.
> 
> Battery powered main memory/storage.
> Second built in battery can act as ups to keep the machine up and function
> throughout extended power outages.

how about bringing back a tried but true technology:

bubbles...  magnetic bubble memory is inherently non-volatile, and the
only problems to be overcome would be speed, and price.  but then
again, have you seen the prices on DEC and IBM's SS disks???

another option could be a good 10AH gellcell on some
micropower-standby ram.  would add some weight, but is the best option
for data retention at ram speeds.

jim
-- 
All opinions expressed are mine, if you    |  "I will not be pushed, stamped,
think otherwise, then go jump into turbid  |  briefed, debriefed, indexed, or
radioactive waters and yell WAHOO !!!      |  numbered!" - #1, "The Prisoner"
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